Description

"As a special case, release also allows track_artist, which is intended to allow you to browse various artist appearances for an artist. It will return any release where the artist appears in the artist_credit for a track, but NOT in the artist_credit for the entire release"

(Minor issue, shouldn't it be track-artist with a hyphen for consistency with release-group and everything else in the WS? And howcome track_artist isn't listed in the "box" above against "release" - should it be?)